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Access VPC:
- Select Site-to-Site VPN Connections
- Select Create VPN Connection

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In the Create VPN Connection Interface:
- Name Tag: Enter
VPN Connection
- Target Gateway Type: Select Virtual Private Gateway
- Virtual Private Gateway: Select VPN Gateway
- Customer Gateway: Existing
- Customer Gateway ID: Select Customer Gateway

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Continue to Perform Configuration:
- Routing Options: Static
- Static IP Prefixes: 10.11.0.0/16. This is the IP address resolution in a simulated On-premise environment.
- Other configurations keep the default.

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Select Create VPN Connection

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Wait for about 5 minutes to finish creating the VPN Connection

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Configure Propagation for Route Tables:
- In the VPC interface, select Route Tables
- Select Route table - Public
- Select Route Propagation
- Select Edit Route Propagation

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In the Edit Route Propagation Interface:
- Select Enable
- Select Save

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Complete and Recheck: Route Propagation should have changed to Yes

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Similar Route Propagation for Private Subnet:
